Home / 998,685.75-1,378,270.30-611,499.27

Finding the Fourth Proportional to 998,685.75, 1,378,270.30 and 611,499.27

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Solution

The fourth proportional to 998,685.75, 1,378,270.30 and 611,499.27 is: 843,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,685.75 : 1,378,270.30 = 611,499.27 : x
  2. Step 2: Convert to fraction form
    998,685.75/1,378,270.30 = 611,499.27/x
  3. Step 3: Cross multiply
    998,685.75x = 1,378,270.30 × 611,499.27
  4. Step 4: Simplify right side
    998,685.75x = 842,811,282,312.68
  5. Step 5: Solve for x
    x = 842,811,282,312.68/998,685.75
  6. Step 6: Final answer
    x = 843,920.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.